Oscillating cylindrical pulp-strainer.



No. 810,813. PATBNTED JAN. 23, 1906. H. SANGUINETTI.

USGILLATING GYLINDRICAL PULP STRAINER.

APPLIoATIoN FILED MAY 12. 1905.

5 sHnTs-SHBBT 1.

. PATENTED JAN. 23, 1906.

H. SANGUINETTL OSGILLATING GYLINDRICAL PULP STRAINER.

APPLICATION PLUIED MAY 12. 1905.

5 SHEETS-SHEET 2.

lll/l" f Il Il lll/011111 [lill/[lilll Flo. 4.

No. 810,813. Y PATENTED JAN. 23, 1906. H. SANGUINBTTL OSCILLATING GYLINDRICAL PULP STRAINBR.

APPLIOATION FILED HAY 12. 1905.

5 SHEETS-SHEET 4.

@wy/Q PATENTED JAN. 23, 1906.

H. SANGUINBTTI. USGILLATING GYLINDRIGAL PULP STRAINER.

APPLICATION FILED MAY 12. 1905.

5 SHEETS-SHEET 5.

Zzeed UNITED STATESN PATENT OFFICE.

OSCILLATING CYLlNDFllCAI. P-ULP-STRAINER.

Specification of Letters Patent.

Application filed May 12, 1905. Serial No. 260126.

patentada. 23, 1906.

To all whom it irl/wy concern:

Be it knownthat I, HERBERT SANGUINETTI, gentleman, a subject of the King of Great Britain, residin lr at 110 Jermyn street, in the county of Lon on, England, have invented certain new and useful Improvements in and Relating to OscillatiniT Cylindrical Pulp- Strainers, of which the following is a specification.

Oscillating 'strainer-cylinders are already known which are fitted inside with fans, beating-arms, or partitions, participating in the oscillating motion of the cylinder; but these partitions have the disadvantage of dividing the interior of the cylinder into separate chambers almost independent of eachother, the consequence being that different conditions of pressure-exist in the liquid in the various compartments, whereby efficient and economical working of the apparatus is impaired.

One object of the present invention is to remedy this evil by a suitable arrangement of these paddle-arms, fans, or partitions; and the present strainer-cylinder,moreover, embodies an arrangement for facilitatin the discharge of the StullP from the cylin er even when it oscillates at. a rapid rate, whereby the efficiency of the apparatus is also materially increased.

In the annexed drawin s, Figure 1 shows a single cylinder in longitu inal transverse section. Fig. 2 is a cross-section of the same, while Figs. 3 and 4 are respectively longitudinal and transverse sections of a doublecylinder strainer. Fig. 5 shows an alternative` form of opening h in the longitudinal partition g for facilitating equality of pressure in adjacent compartments; and Fi 6 shows another form of such opening, di ering from the preceding fi ure mainly in the size of such opening and the curvature of the conical central tube j', these two iigures indicating approximately the range of size of opening, which may be' modified according to the character of the stuff. Fig. 7 shows another modification in which a number of smaller holes, are used to replace the one opening before illustrated. IFig. 8 shows in end elevation oneof the hoops and its locking device for holding they strainer-plates in position, 'drawn to a lar er scale. Fi 9 by a cross-sectional view s ows a part o a vat with the strainer removed, illustrating the valve arrangement of the pocket for use in cleansin the vat during Working. Figs. 10 and 11 ilustrate, respectivel in transverse and longitudinal' section, t e. outlet-valve arrangement.

a is the cylinder, which is fitted at either end with a bearing or stilfening plateb and c respectively, the latter plate being provided with the outlet d. Within the cylinder a the by some mechanism, is borne in a conical nave or central tube j'.

In order to establish uniform conditions of pressure within the apparatus in each of the compartments formed by the lon itudinal partitions g, these latter are rovi ed with openings or recesses h. There y all the ^om partments of the apparatus are rendered communicating with each other, the unequal conditions of pressure otherwise existing are compensated, and generally the entire action in the interior of the cylinder is rendered more elastic. 4

Theconical hub or center tube f mentioned abo ve forms a suitable deflection surface for thedischarge of the stuff from the cylinder a, which will enable the apparatus to meet the of stuff even with a rapid rate of oscillation.

As will be seenfrom Figs. 3 and 4, the single cylinder just described may also be executed in the form of a double cylinder. The cylinder a is stayed in its center internally by a partition i, which in accordance with the perforated or recessed at j j, so as to establish effective communication throughout the compartments of the cylinder. The disofa double cone serving as nave or central tube toward the two end plates c, which are strainer is mounted in a cast-iron trough 1 and is caused to oscillate rapidly through six to twelve degrees about its axis by means of a vibrating crank. The plates areremovlongitudinal edges lit into grooves in the frame of the cylinder a, the joint being made by a strip of wood or rubber. The plates are held in position on the cylinder aby means of ring or strap parts 7c, adjustable at the ends l, which also serve by compressing a packing material for making the joint.

fundamental idea of the invention is likewiseshaft or spindle @set into oscillating motion requirements as regards a regular discharge v charge of the stuff ensues along the periphery provided with outlets d. The cylindrical IOO able. Two plates are used,and theirflanged screwing arger or smaller gage.

.packing at the head ends is not Those who use plates of different .gage do sometimes not require to have an extra spare cylinder, as all plates are adjusted to t any cylinder of same diameter. The plates can be removed in a few minutes, cleaned, and relaced or others substituted for them of a inder a may be circular in cross-section or prismatic or olygonal at pleasure and consists, as is well known, of a number of iinelyslit metallic sheets a', which the pulp must pass through in order to be strained.

The use of such apparatus as previously used so far as known to me has been accompanied by the defect of gradual stop age of the slits 1n course of time, and this efect is not preventable, despite of mechanical cleansing contrivances applicable and operated during working, necessitating a hand cleansing while the cylinder is at rest and not working. To effect this manipulation completely and thoroughly, the cylinder-shell is made to take in two pieces, each piece a a quickly and certainly cleansible both inside and outside. The two portions a' a of the cylindershell consist peripherically of metallic sheet longitudinally turned down or bordered in order to offer to an intermediate packingblock, of rubber, wood, metal, or other packing material, a suilicient contact and securing surface. With a stout metallic sheet the border or edge may be replaced by an angleiron riveted on throughout its length. The

of the metal sheets upon the cylinder covers or ends b is effected bystraps or bands lc. For the pur ose of carrying the sheet-metal cylinder-s ell at intermediate vpoints and also to further secure the cylindercovers together the bars are correspondingly arranged.

In long cylinders the shell may be divided transversely two or'more times. Then two of the previouslydescribed shells are arranged to meet and bear against each other at t eir larger diameters. y A

The packing of the circular joints and the effected by rubber rings, but by tightening-bands of brass having rubber sleeve or tubing placedl on their lower side and hinges m, lugs n, and lolts o, respectively indicated in side View, i 8.

s shown by Fig. 9,to facilitate the cleaning of the cast-iron vat it is formed below the form of a sack or pocket 2, and therein are formed bearings 4, carrying a of trunnions 5 and a circular slide 3, which slide acts as a valve which permits of the emptying of the machine while it is at work without interfering with its action. This emptying of the circular slide can be promoted by letting Water pass through the s ide. To avoidany risk of the slide 3 being choked and of its mobility being impaired thereby when dealin with st of a very unctuous nature,

The straining-cylprovide a discharge-valve either of the trap or of the hinged type instead of the clrcular type. p shows a convenient form of valve for the purpose carried by a lever Weighted at g and centered at r.

Havin now particularly described and ascertaine the nature of my said invention and in what manner the same is toA be performed, I declare that what I claim is- 1. An oscillating strainer-cylinder for paper and cellulose manufacture,provided with partitions, dividing the inte 'or s ace ofthe cyhnder into compartments, w 'ch artitions participate in the oscillating motion of the cylinder, the said partitions being provided w1th openings yso arranged as to establlsh communicationbetween the various compartments of the cylinder and so as thereby to increase the eficiency of the apparatus b reason of the compensation of pressure a forded in the interior of the cylinder, substan-- by the draw- IOO ing through the cylinder and facilitating the A discharge of the stuff therefrom during the operation of the'cylinder, a central stay-partition interposed between the nave and the wall of the cylinder, said partition being perforated, and a drivensha-ft connected with the nave for oscillating the cylinder.

4. A pulp-strainer comprising a casing provided at one end with a pocket, a rotatable slide arranged in'said pocket and constituting a discharge-valve, counterbalanced means for rotatably sup orting said slide, an oscillatory strainer-cy der arranged within said casing, and perforated partitions within said strainer-cylinder. .l

5. A pulp-strainer comprising an oscillatory cylinder having the wall thereof perforated, a closure-plate provided witlh an outlet and arranged at one end of the cylinder, a closure-plate at the other end of the cylinder, aconical-shaped nave within the and a driven shaft extending thr ugh said outlet at one end of thecylinder, through the said nave and the plate at the other end of the cylinder and adapted when operated to impart oscillations to the cylinder.

6. A pulp-strainer'comprising a casing provided with a pocket having an outlet, a rotatable slide arranged insaid pocket and adapted to act as a closure means between the cascylinder,

lla

ing and the pocket, an oscillatory cylinder arf counterbalance means for closingthe outlet ranged Within said casing, and perforated of said pocket.

partitions Within said strainer-cylinder. In testimony whereof have hereunto set 7. Apulp-strainer comprising a casing promyhand in presence of two subscribing Wit- 5 vidiled-zh a pockJ having anlgutletaotanes'ses.

tabes' earran e insai oc etan a a ted to act as a clogsure meansp between the cs- HERBERT SANGUINETTI" ing and the pocket, an oscillatory cylinder ar- Witnesses:

ranged within said casing, perforated parti- GEO. J. B. FRANKLIN,

1o tions Within said strainer cylinder, and a 1 W. J. NoRWooD. 

